ASTM WK42461

    New Test Method for Density (Unit Weight) and Air Content (Pressure Method) of Freshly Mixed Roller-Compacted Concrete

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    Developed by Subcommittee: C09.45 | Committee C09 | Contact Staff Manager



    WK42461

    1. Scope

    1.1 This test method covers the determination of density (unit weight) and air content of freshly mixed roller-compacted concrete using the apparatus described in Test Method C231/C231M and the vibrating hammer described in Practice C1435/C1435M. 1.2 This test method is intended for use with roller-compacted concrete made with relatively dense aggregates for which the aggregate correction factor can be satisfactorily determined by the technique described in Test Method C231/C231M. It is not applicable to concretes made with low-density aggregates. 1.3 The text of this test method references notes and footnotes that provide explanatory information. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (WARNING--Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)

    This standard will be used in the design of roller-compacted concrete (RCC) mixtures and to aid in controlling the quality of those mixtures during RCC construction.


    Keywords

    air content; calibration; roller-compacted concrete; RCC; correction factor; measuring bowl; meter; pressure; pump; unit weight; density

    The title and scope are in draft form and are under development within this ASTM Committee.

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    Work Item Status

    Date Initiated:
    0000-00-00

    Technical Contact:
    Dennis Clute

    Item:
    001

    Ballot:
    C09.45 (14-03)

    Status:
    Negative Votes Need Resolution